5 papers · 1 filter
Impact of subhalo dynamical friction heating on the formation of the first structures in the universe
Zhenyu Wu, Sadegh Khochfar, Muhammad A. Latif +2
We present a model for gas heating, driven by dynamical friction from orbiting subhalos within dark matter halos. Using data from the TNG50 simulation, we derive the subhalo mass f…
Conditions for Super-Eddington Accretion onto the First Black Holes
Simone T. Gordon, Britton D. Smith, Sadegh Khochfar +1
Observations of supermassive black holes at high redshift challenge our understanding of the evolution of the first generation of black holes (BHs) in proto-galactic environments.…
A Heavy Seed Black Hole Mass Function at High Redshift -- Prospects for LISA
Joe McCaffrey, John Regan, Britton Smith +3
The advent of new and near-future observatories probing the earliest epochs of the Universe has opened the opportunity to investigate the formation and growth of the first massive…
Why does the Milky Way have a metallicity floor?
Britton D. Smith, Brian W. O'Shea, Sadegh Khochfar +3
The prevalence of light element enhancement in the most metal-poor stars is potentially an indication that the Milky Way has a metallicity floor for star formation around 10$…
Hungry or Not: How Stellar-Mass Black Holes Grow (or Don't) in Dark Matter Mini-Haloes at High-Resolution
Simone T Gordon, Britton D Smith, Sadegh Khochfar +1
We compare the performance of the popular Bondi-Hoyle-Lyttleton (BHL) accretion scheme with a simple mass-flux scheme applied to stellar-mass black holes (BHs) across six levels of…